// let position: number[] = [39.5427, 116.2317];

// 定位的经纬度值
let position: [number, number] = [39.5427, 116.2317];

// 根据值的类型进行类型推断
let age = ["12", "34"];

//根据返回值的类型进行类型推断
function init(a: boolean, b: boolean) {
  return a;
}
